>> reporter: fox news has learned that the decision to close the cia annex and to destroy all of the classified information and move out the classified communications equipment came within 12 hours, 12 hours of the at dark -- attack on the consulate itself and early morning september 12th, by 8:00 local time, effectively the cia operation in benghazi was shuttered. all the classified information was moved or burned as well as the equipment and this was a decision fox was told was made on the ground. then there was notification to washington. it is important to look at this particular data point and contrast it with how long it took the fbi to get into the consulate. that took several weeks. in fact the u.s. consulate in benghazi has never been secured by the united states, martha. martha: wow! great points, catherine the thank you very much. >> reporter: you're welcome. bill: the families demanding answers. the father of one of the former navy seals killed that day leading the charge on this saying he is hearing nothing from the government on what happened to his son. coming up today